Internal-combustion engine



Jan. 3, 1928.

1,654,701 A. L. POWELL INTfiRNAL COI BQUSTION ENGINE med Dec. 24. 1920 s sham-sheet '1 A. 1.. POWELL INTERNAL CQIBUSTIQN ENGINE Filed Dec. 2,4) 192 0 3 Sheets-Sheet 3 V I gmentoo Patented Jan, 3, .1928.

, UNITED. STATES- I 155 5 PATENT OFFICE.-

A-Lvnn L. row nnn or mnns CITY, MONTANA, nssrenon, in! mnsnn assrenmnn'rs, TO Tim is L. POWELL rownn conrenyg mconronn'rnn, or mnns CITY, Moncrime, A conrona'rron' 'or MONTANA.

m'rnnnnn-connns'rron ENGINE.

Application filed December 24, 1820. Serial No. 433,033.

My'inventionrelates to improvements in 5 .internal combustion engines in, which I ef- -fect. an ultimatencompression by a secondary' COIIIPIBSSlOIl means, obtaln ng, at the sametlme, a firing eflect wh ch makes an engine built according to my. plans 'a self;

contained power developing structure. The form shown herein is an improvement over. i that given in my application bearing the 10 Serial No. 433,032. In that application, however, I show a. means of operating the secondary piston from the heat of the exhaust. gases, but in. this. I use auxiliary, means, operatedirom the power of the crank Shaft. V

i Inthe accompanying drawings I show an arrangement of my improvement, together' with modifications thereof.

Fig. 1 is an elevation, partly in section.

line ab,eFig. 1.

Fig. 3 isa modification of my invention, applied to a two cycle engine. The view is an elevation, in section.

Fig. tis an; elevation of the same m0di-. fication, showing it adapted-to a four cycle engine. Q Fig. 5 is a cross section of the modification in Fig. 4, showing th e reciprocating piston and rotating piston in relative posi tions at end of upstrokeof the reciprocating piston. Q

-Figl 6 shows my invention with compressed air operable means. I F'gs Z, 8, 9, are sectional views of the valves controlling air How and exhaust in the construction givenin Fig. 6.

In Fig. '1, apiston, C", is slidable ina" cylinder of .a gas engine, here assumed to be 40 of the four cycle type. Slidable pistons, A A, are shown, the latter moving at right angles-to the piston C. Inlet and exhaust -valves are indicated at A, A From the pistons A A, piston rods, F, F, arefitted to the arms of bell cranks, F, F The other armsof the bell cranks aresimilarly fitted to a bar,'F* that forms part of cam rodf F On the end of'this' rod is a cam roller D ,'that rides on a cam' The cam is rotated by properly proportioned gears, on shafts as shown. From the piston C- movement isi nparted to theshaft C by, the conventional means, shown. h At the end of upstroke of the power pis- ;G, G I

sions from the cylinder A. This effects 'The' compression already existing is in- Fig. 2 is a cross section on; the. dotted spring H provides for the return of'the ton C and immediately'iprior to the. ex-

plos'ion, the parts are in the position given in Fig. 1.g The engine crank 15 vertical and Y the piston is stationary as it pauses on the center line of shaft. At this point, and for a-short time thereafter whenjmotion is neg ligible by reason of the crank-angle, the cam D lifts the roller D The connecting means between (cam and bell cranks causes I the latterto rock on theirsupporting pins,

The latter are mounted, on exteir 05 movement of the pistons A", A, in a direction towards each other, the space between them decreasing'in volume as they advance.

creased by this. The parts ane'proportioned to give an extreme compression and the heat rises to the point of combustion, the charge being fired. I It is evident that this firing will always occur on the outstroke ofi piston, and never on its upstroke, precluding pro-ignition.

In Fig. 3-1 effect the same purpose by means of a rotary piston that fulfills the functions of the two reciprocating pistons already described. The rotary member, H,

Fig.5, makes a part turn on the instroke of the reciprocatingpiston C The latter is machined out to fit H closely, while a lug, H from the cylinder fits the rotary; mem ber H, as shown, assuring tightness from leakage. H is rotated by a crank, H oper-. ated by a pitman H and bell crank H", the

latter moved in proper-time by a cam. A

movement to. an initial position. v y

In Fig. 4 the same functions are filled in thesame 'Way,.;but the valves are arranged for a four cycle instead of a two cycle engine.

Fig. 6 shows an engine'equipped as a1 -v ready described but in which the operatin power for the secondarypistons is obtaine froma compressed air. pump, J, operated by a crank'J Air from this pump is forced into a cylinder J From this it is dis- 'tributed to the secondary pistons at the proper time, through a two way valve J The timing is effected by the cam D, which lifts the cam rod D in turn operating the bell crank D by means of the rod D which opens the two .way valve, J permitting com pressed air to flo'w through pipe C.

' On 'releese of my "ma b c am'D/the air port is thrown to exhaust .jgs .7,.8). -i Fig; 9 f shows the yalve when Compressed air 1s passin'gto the reciprocpting-p tons. n 'WhatI 'claimis new, and as tected by- Letters Patent, is-.-

as. ate pro 1. Inv an internal combustmn' engine powericy-linden, .a :po er piston, inlet [and Y yoke said 1) outlet valves, icylindric'sil spacesin the head ofsaid p'ow'er' cylind er and at right angles thereto, pistons in said cylindrical spaces,

.rods' from said pistons ,project'ing ;beyo1 1d :said cylindrical spaces, bell cranks, supporting lugsfrom theen ine'for said'belleranks, springsfrom said" 'ell cranks, .supfiortin'g- 'bell cranks to said-rods, a roller on said bar, gr can shaft, means formoving said roller by: the when of said cam shaft, power shaft,

tially 'as described] andnieefis for roteting said power shaft-by .themoy'ement of said power:- piston, substan-'- 2. In an] vinternal combustion engine, "a

fpower cylinder, a' poyven piston slidable therein, @wrank shaft, means operatively connecting said piston withjsaid crank shaft,-

a' secondary 'cylinder,-'episton slidable there v in, a; bell crank lever, means operativel eon v,'neetin g'said last-mentionedpiston" wit v said hellprenk lever, supporting means for said fbellfcrank lever, a can'1', i'r'1eans operatlyely connecting said cam with said crank shaft,

and a rod operatively' c onnected' tof said bell tonslid'able in the secondary cylinder is held stationary during the firing stroke of the priemery piston.

Intestimony ALVAH L. POWELL.

whereof I a'fiin signature perank lever, seiclrod being-engaged by said i I can 1 and operated thereby, the a havinga',. I periphery'of such a contour so that thepis 

